Get `gn gen` to succeed on Windows

third_party/sqlite/src/test/rtree.test

Index: third_party/sqlite/src/test/rtree.test
diff --git a/third_party/sqlite/src/test/rtree.test b/third_party/sqlite/src/test/rtree.test
new file mode 100644
index 0000000000000000000000000000000000000000..b5045746cd8681de61cc4c9ad780db45e4999f7f
--- /dev/null
+++ b/third_party/sqlite/src/test/rtree.test
@@ -0,0 +1,18 @@
+# 2008 June 23
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#***********************************************************************
+# This file runs all rtree related tests.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/permutations.test
+
+ifcapable rtree {
+  run_test_suite rtree
+}
+
+finish_test